Spindle-bolster



G. DRAPER.'

SPINDLE BOLSTER.

Patented Jail. 3,1882.' Y

No.I 251,842.

UNITED STATES PATENT OFFICE.

GEORGE DRAPER, OF HOPEDALE, MASSACHUSETTS.

SPINDLE-BOLSTER.

-SPECILEIGA'IION forming part of Letters Patent No. 251,842, dated January 3, 1882.

4 Application tiled J une 24, 1875.

To all whom 'it may concern:

Be it known that I, GEORGE DRAPER, of Hopedale,in the countyof Worcesterand State of Massachusetts, have invented Improvements in Spindle-Bolsters, of which the following is a specification.

This invention relates to improvements in spindle-holsters for use in machines for twisting yarn; and it consists in a spindle having an attached surrounding sleeve combined with a bolster arranged between said spindle and sleeve, said bolster being provided with a spiral groove, inlet and outlet passages, and a cup-like collar forming at the top of' the bolster an oil-receivin g chamber, substantially as hereinat'ter specifically set forth and claimed.

The drawing represents one ot' my improved spindlebolsters, with the bolster, spindle, sleeve, Ste., in section.

The spindle is ot the class known as the compound7 spindle, it being composed ot' a spindle proper, ya, and a sleeve, 1g, attached at the top of the spindle a, the sleeve being provided with pins to engage and turn the bobbin, thus making the sleeve a `positive bobbinholding sleeve.

Between the spindle and sleeve is a space. into which fits the upper portion ot' the bolster cpthe bolster thereby stead ying the spindle near its upper end and the bobbin surroundin g thc sleeve, bolster, and spindle. The longfbolster reduces the tendency of the spindle to vibrate at its top. The bolster c is provided with an oil-receiving opening, d, leading to the spindle, and oil, usualv applied while the spindles arein motion, passes through such opening, and is carried upward about the spindle by the spiral groove e, leading from the bottom to the top of the bolster, where it is retained while the spindle is kept in rotation. At the top of the bolster or tube is a cup-like collar,j`, with its upper end bent in toward the spindle, forming at the top ot' the bolster an oilreceiving chamber, (lettered g,) and in the top Y of the tube is an outlet, h. IThe chamber g has not a bottom outlet. It is impossible for lint or dirt to get into the oil at the top of the tube through the space between the sleeve and bolster, as the lip on the cup-like collar j' prevents its passage. During the rotation of the spindle the oil is drawn by the spiral groove either in the bolster or in the spindle upward about the spindle, and such oil passes through the outlet 71. and over the top of the bolster into the chamber g, and all heavy and impure or gritty matter of greater spcciiic gravity than oil, should anything ofthe kind get into the oil, will settle in such chamber below the opening at It, and only the lighter oil will flow back fromsuch chamber and down into the oilcup. The provision of' this outlet IL above the closed bottom of the oil-receivin g chamber at the top of the tube is of much importance, as grit once in the oil and allowed to move with it up and down the spindle will roughen the latter and cause it to wear rapidly and run hard.

It is evident that the collar of `the sleeve might be made as a whirl and. as denoted in dotted lines, Figure l; but such method of driving the compound spindle would not beas desirable as to drive the compound spindle from the whirl 't'. The foot of the spindle is surrounded by a tube and cup, as usual. The top oit' the spindle is shouldered at i', forming a seat for the upper end of the sleeve, and is screw-threaded to receive a nut, j, to confine the sleeve to the spindle.

I do not claim a spindle with a sleeve permanentl y attached thereto, as claimed by J. B. Bancroft in his application filed July 20,1878.

I claiml. The spindle and its attached surrounding sleeve, in combination with the spirallygrooved bolster intermediate of the said spindle and sleeve, the cup-like collar at the top of the bolster forming the oil-chamber g, having an outlet, h, at its top, substantially as shown and described.

2. The spirally-grooved bolster having an oil-inlet and a cup-like collar,f, at its top, provided With an oil-cbamber,g, and outlet h, combined with an interna-l spindle and an external sleeve, all substantially as shown and dcscribed.

In testimony whereot'I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE DRAPER.

Witnesses:

G. W. GREGORY, S. B. KIDDER. 

